The Asmjs Keyword
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In this episode, we explore the ASM.js galaxy, as a fallback to WebAssembly when the JavaScript host doesn't support it. We end by a benchmark comparing the Rust to WebAssembly to ASM.js to JavaScript design versus the PEG.js solution: is it faster? Is it still worth it after the conversions to ASM.js? Oh bloody… still yeah!
In this episode, we explore the WebAssembly galaxy.
We first off present WebAssembly. Then we see how to write a Rust program tailored for WebAssembly. We continue by explaining how to run this WebAssembly module on a JavaScript host. It brings some complications, like how to flatten an Abstract Syntax Tree to get fast memory accesses between Rust and JavaScript. We continue by reducing the size of the WebAssembly module to make it as small as possible, smaller than a tiny image. Finally, we compare performance of this Rust to WebAssembly to JavaScript design versus the original PEG.js solution: is it faster? Oh yeah… it is!